Dr. Staff

'I don't mind if another Doctor looks.' Dr Derriere buzzed his colleague, and a minute later the door opened, and in walked Dr Staff. Tall, black, muscular, very popular with the female patients. when Riley saw what Dr Staff looked like she licked her lips.

If Dr Staff was surprised to find an eighteen year old kneeling on the patients chair, bottomless, with her ass in the air and Dr Derriere peering at her sphincter, he didn't show it. He came over and stood behind Riley, who was grinning, and put his glasses on. 'What do we have here?' he inquired.

'Well Doctor,' said Dr Derriere. 'Riley cannot stop putting things in her ass. Even when she is getting fucked in her pussy or mouth, she says she needs something in her ass in order to enjoy it. she is worried about her obsession - she even wore a butt plug all day today - and I've been doing some preliminary tests. She's got, right now, a nine inch dildo in her ass - can you see?' The new doctor, leant in, and Riley felt his breath on her ass. She could feel her sphincter muscles straining to keep the dildo from being released. 'Oh, yes,' said Dr Staff. 'Your ass is winking at me young lady, and with nine inches inside. You really are talented.' She felt his tongue on her bumhole.

'Why don't you push it out for me?' Dr Staff said. The two doctors stood back and watched as the young girl expertly relaxed her sphincter and gently controlled the released of nine inches of dildo from her ass. 'Wow. Dr Derriere, you have found a unique specimen here.'

'That's the largest thing I've ever had in my ass,' said Riley proudly.

Dr Staff unzipped his fly and pulled his cock out. It was huge. 'The reason I asked Dr Staff in here Riley, is that he has the biggest cock in our surgery. Just over nine inches, and thick - look.' Dr Staff went and stood in front of Riley so that she could see. Instinctively she took him in her mouth. 'Would you like to see how your ass copes with his cock?' She nodded, mouth full.